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Detection of tetracycline resistance determinant tetA gene and antimicrobial resistance pattern in Escherichia coli isolates recovered from healthy layer chickens.
Effect of tilmicosin alone or in combination with Mannheimia haemolytica toxoid administered at initial feedlot processing on morbidity and mortality of high-risk calves.
Detection of tetracycline resistance determinant tetA gene and antimicrobial resistance pattern in Escherichia coli isolates recovered from healthy layer chickens